Where to Find Silver Bromide in Bloodstained Ritual of the Night
Dominique is one of the merchants you will meet along your travels in Bloodstained Ritual of the Night. She sells a number of wares out of here shop in Arvantville. If you explore her place a bit, you can trigger an important interaction regarding the photograph in the left side of the room. Dominique will ask you to bring her Silver Bromide. This guide will show you where to find Silver Bromide in Bloodstained Ritual of the Night.
Silver Bromide is Found in Towers of Twin Dragons
To find Silver Bromide you need to advance the story a ways (see guide here). You need to reach the upper portion of the Towers of Twin Dragons area and fight the boss, Valac. Upon defeat of Valac you will fall down the tower to ground level. Once you regain control, jump up to the chest you see above you and open it to get Silver Bromide.
What to Do with Silver Bromide?
Once you have the Silver Bromide you may be wondering what to do with it? Well return to Dominique in Arvantville and speak with her. She will take the Silver Bromide and use it to take a picture of Miriam. This results in the item Identification being added to your inventory.
What to Do with Identification?
Once you have Identification you may be wondering what to do with that item. Well the answer is to take it to the vampire librarian OD. OD can be found in the Livre Ex Machina area. Speak to him and he will give you his pass to the vampire train. This results in the creation of the Passplate item.
What to Do with Passplate?
You are on the homestretch here. Take the Passplate to the Bridge of Evil area and use it to enter the locked Demon Gates found there. This will give you access to the train.